body{
  padding:50px;
}
.imgBox{
  width: 300px;
  display: block;
  background-color: #fff;
  min-height: 100px;
  box-shadow: 1px 1px  2px  2px #eee inset;
  border-radius: 4px;
}
.popup-wrap{
  position: fixed;
  top: 0;
  bottom: 0;
  right: 0;
  left: 0;
  background: rgba(0,0,0,0.5);
  align-items: center;
  justify-content: center;
  display: none;
}

.popup-wrap.on{
  display: flex;
}

.s-upload-container{
  width:898px; 
  height:586px;
  background: #fff;
}
.size_btn{
  background: #275d96;
  color: #fff;
  height: 50px;
  padding: 0 30px;
  border-radius: 6px;
  border: 0;
  margin-right: 15px;
  font-size: 18px;
}
.s-upload-container .btn{
  background: #275d96;
  color: #fff;
  border: 0;
  line-height: 35px;
  padding: 0px 12px;
  border-radius: 4px;
  font-size:14px;
  float: left;
  margin-left:5px;
  cursor: pointer;
}

.s-upload-container .submit{
  width:200px;
  margin:0px 0px 0px 18px;
}
  /* 头部 */
.s-upload-container>.head{
  border-bottom: 1px solid #e5e5e5;
  line-height:54px;
  font-size:18px;
  padding:0 15px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* 主体 */
.s-upload-container>.s-upload-main{
  position: relative;
  padding: 15px 30px;
}

/* 顶部 */
.s-upload-main>.top-box{
  overflow: hidden;
  margin-bottom:18px;
}
.s-upload-main>.top-box .file-box{
  position: relative;
  overflow: hidden;
  height: 35px;
}

.s-upload-main>.top-box .file-box .btn{
  position: absolute;
  left:0;
  right:0;
  bottom:0;
  top:0;
  opacity: 0;
  width:100%;
}

.s-upload-main>.top-box .title{
  float: left;
  width: 100px;
  line-height:35px;
  font-weight: bold;
  font-size:14px;
}
.s-upload-main>.top-box .right{
  float: right;
  line-height: 35px;
  font-size: 14px;
  width: 200px;
  font-weight: bold;
}
/* 中间 */
.s-upload-container .s-upload-content{
  height:364px;
  overflow: hidden;
}
.s-upload-content .left-box{
  float: left;
  width:620px;
  height:364px;
  background:#ececec;
}
.s-upload-content .left-box .image{
  display:block;
  width:100%;
  max-width:100%;
}
.s-upload-content .right-box{
  float: right;
  background:#ececec;
}

.s-upload-content .right-box .previewBox{
  width: 200px;
  height: 200px;
  overflow: hidden;
  /* 这个属性可以得到想要的效果 */
}

/* 底部 */
.s-upload-main>.bottom-box{
  overflow: hidden;
  margin:30px 0 15px;
}

.s-upload-main>.bottom-box .left{
  float: left;
}


.s-upload-main>.bottom-box .right{
  float: right;
}

#uploadForm{
  position: fixed;
  left:1000px;
}